fix(chatInput): fix CSS class name in ChatInput component to use "bg-background" instead of "bg-input" when form-modal-lock-false condition is met

src/frontend/src/modals/formModal/chatInput/index.tsx

@@ -53,7 +53,7 @@ export default function ChatInput({
             ? " form-modal-lock-true bg-input"
             : noInput
             ? "form-modal-no-input bg-input"
-            : " form-modal-lock-false bg-input",
+            : " form-modal-lock-false bg-background",
 
           "form-modal-lockchat"
         )}